#4949: Optionally build spkgs in $SAGE_BUILD_TMPDIR
-------------------------------------------------------------+--------------
Reporter: mabshoff | Owner:
mabshoff
Type: enhancement | Status:
needs_review
Priority: minor | Milestone:
sage-5.0
Component: build | Keywords:
sd32
Work_issues: | Upstream:
N/A
Reviewer: Mariah Lenox, Leif Leonhardy, Maarten Derickx | Author:
John Palmieri
Merged: | Dependencies:
-------------------------------------------------------------+--------------
Changes (by jhpalmieri):
* status: needs_work => needs_review
Old description:
> `$HOME` can be slow in case it is NFS-mounted for example. So using local
> scratch space or even better a RAM disk should speed up the build by a
> nice factor. To do so, use `$SAGE_BUILD_TMPDIR/build/` in case it exists
> instead of `$SAGE_ROOT/spkg/build/`.
>
> ----
>
> Apply [attachment:trac_4949-root.patch] to the Sage '''root
> repository'''.
>
> Apply [attachment:trac_4949-installation.patch] to the '''Sage
> library'''.
New description:
`$HOME` can be slow in case it is NFS-mounted for example. So using local
scratch space or even better a RAM disk should speed up the build by a
nice factor. To do so, use `$SAGE_BUILD_TMPDIR/build/` in case it exists
instead of `$SAGE_ROOT/spkg/build/`.
----
Apply [attachment:trac_4949-root.v2.patch] to the Sage '''root
repository'''.
Apply [attachment:trac_4949-installation.patch] to the '''Sage library'''.
--
Comment:
If you run "sage -i blah" and "blah" is an optional spkg which needs to
be downloaded, would it make more sense to save the spkg in
$SAGE_ROOT/spkg/optional/ or in $SAGE_BUILD_TMPDIR/optional? The previous
versions of the patch do the second of these, but I think it makes more
sense to do the first: downloading spkg files for optional packages is not
the same as building, so setting SAGE_BUILD_TMPDIR shouldn't cause the
spkg files to end up somewhere nonstandard. Another way to say it: I
don't view downloaded spkg files for optional spkgs as temporary, the way
build directories are.
Here's a new patch. I've removed the variables "BUILD" and "BUILD_DIR",
and I've appended "build" to the setting of "$SAGE_BUILD_TMPDIR". I still
check whether `$SAGE_BUILD_TMPDIR` exists, as a safeguard against typos,
for example. Optional spkgs are kept in `$SAGE_PACKAGES/optional`
regardless of the setting of `$SAGE_BUILD_TMPDIR.`
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4949#comment:37>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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